Hyundai Sonata: Engine coolant - MaintenanceHyundai Sonata: Engine coolant

The high-pressure cooling system has a reservoir filled with year-round antifreeze coolant. The reservoir is filled at the factory. Check the antifreeze protection and coolant level at least once a year, at the beginning of the winter season, and before traveling to a colder climate.

Changing the engine oil and filter
Have engine oil and filter changed by an authorized HYUNDAI dealer according to the Maintenance Schedule at the beginning of this section. CALIFORNIA PROPOSITION 65 WARNING Engine oil contains ...

Checking the coolant level
WARNING Removing radiator cap Never attempt to remove the radiator cap while the engine is operating or hot. Doing so might lead to cooling system and engine damage and could result in se ...

See also:

Gear Actuator Assembly Schematic Diagrams
Circuit Diagram ...

Warnings and indicators
All warning lights are checked by turning the ignition switch ON (do not start the engine). Any light that does not illuminate should be checked by an authorized HYUNDAI dealer. After starting th ...

ESP Control Unit Repair procedures
Removal 1. Turn the ignition switch OFF. 2. Pull up the lock of the HECU connector , then disconnect the connector. 3. Disconnect the brake tubes from the HECU by unlocking the nuts counte ...